/Engine/Source/Runtime/Engine/Classes/Components/HierarchicalInstancedStaticMeshComponent.h
virtual bool BatchUpdateInstancesData ( int32 StartInstanceIndex, int32 NumInstances, [FInstancedStaticMeshInstanceData](API\Runtime\Engine\Components\FInstancedStaticMeshInstanceData) * StartInstanceData, bool bMarkRenderStateDirty, bool bTeleport )